<strong>Lionel Messi scored the goal that puts Barcelona in pole position to progress from their Champions League tie with Chelsea. But the feeling persists that Ernesto Valverde’s system puts too much of the onus on one man, writes Adam Bate from Stamford Bridge.</strong>

Ernesto Valverde declared himself "happy" after <a href='http://www.skysports.com/football/chelsea-vs-barcelona/report/386482'>Barcelona claimed a 1-1 draw at Chelsea</a> in the first leg of their Champions League last-16 tie on Tuesday.